Grout Repair of Dent-Damaged Steel Marine Tubulars
Publication: Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 122, Issue 3
Abstract
A test program consisting of 13 steel tubular brace specimens with dent damage and various diameter-to-thickness ( D/t ) ratios was conducted to assess the residual strength and repair of damaged tubular braces used in offshore platforms. Specimens were inflicted with a dent having a depth of 0.10 D, with internal full grouting and grouted steel clamps, respectively, used to repair specimens. A baseline of unrepaired, damaged specimens subjected to concentric axial loading showed a significant reduction in residual strength due to the dent. A further reduction in axial load capacity was found in specimens subjected to combined loading. The use of grout to repair specimens was found to inhibit a growth in dent depth under axial loading and restore the capacity of the dented member to a level greater than the undamaged strength. A comparison with existing and modified analytical methods for strength prediction of unrepaired and grout repaired braces showed that these methods provided reasonable results.
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Information & Authors
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Published In
Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 122 • Issue 3 • May 1996
Pages: 110 - 117
Copyright
Copyright © 1996 American Society of Civil Engineers.
History
Published online: May 1, 1996
Published in print: May 1996
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